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Nothing ruins a road trip faster than a fishtailing trailer or bone-jarring bumps from an inadequate pin box. Standard rubber-block designs wear out quickly and transmit every road imperfection into your RV's frame. The Curt Helux Coil-Spring Pin Box solves these problems with its advanced suspension system engineered for heavy-duty towing applications.
Features
- 18,000 lbs. gross trailer weight rating - Handles even large fifth wheel trailers with confidence
- 2,600 lbs. maximum pin weight capacity - Supports heavy front-end loads without compromising stability
- Coil-spring suspension system - Absorbs road shocks better than rubber-block designs for a smoother ride
- Precision-machined kingpin - 2-5/16" diameter meets SAE J133 specifications for reliable hitch engagement
- Durable steel construction - Powder-coated finish resists corrosion from road salt and weather
- Maintenance-free design - No greasing required for long-term reliable performance
Engineered for RVers who demand the best towing experience, the Curt Helux pin box transforms how your fifth wheel handles on the road. The progressive-rate coil springs actively dampen trailer oscillations that cause sway, while simultaneously isolating your RV from harsh road impacts. This means less driver fatigue on long hauls and reduced stress on your trailer's frame.
Unlike basic pin boxes that bottom out on rough roads, the Helux's suspension system provides consistent performance whether you're navigating city streets or mountain passes. The kingpin's precise machining ensures positive engagement with your hitch every time, eliminating the worrying "clunks" and play of worn components.
Tech Specs
- Brand: Curt™
- Type: Helux Coil-Spring 5th Wheel Pin Box
- Capacity: 18,000 lbs. GTWR
- Pin Weight: 2,600 lbs.
- Kingpin Size: 2-5/16" diameter
- Construction: Steel with powder coat finish
- Suspension: Coil spring system
- Weight: 0 lbs (contact for actual shipping weight)
- SKU: 2024044568
What's Included
- Curt Helux Coil-Spring 5th Wheel Pin Box
- All necessary mounting hardware
| Brand | Curt™ |
|---|---|
| Type | Helux Coil-Spring 5th Wheel Pin Box |
| Capacity | 18,000 lbs. GTWR |
| Pin weight | 2,600 lbs. |
| Kingpin size | 2-5/16" diameter |
| Construction | Steel with powder coat finish |
| Suspension | Coil spring system |
| Weight (lbs) | 0 |
| Sku | 2024044568 |
- Will this pin box fit my existing fifth wheel trailer? The Curt Helux pin box is designed as a direct replacement for most standard fifth wheel pin boxes. Measure your current pin box mounting pattern and compare to the Helux's dimensions to confirm compatibility.
- How does the coil-spring design improve towing? The progressive-rate coil springs actively dampen trailer sway and absorb road shocks better than traditional rubber-block designs, resulting in improved stability and ride comfort.
- Is professional installation required? While mechanically-inclined owners can install the pin box themselves, we recommend professional installation to ensure proper alignment and torque specifications are met.
- What's the warranty coverage? Curt offers a limited lifetime warranty on this pin box against defects in materials and workmanship when used as intended.
Factory-Fresh OEM Parts — the same brands installed in new RVs straight from Elkhart. Genuine, name-brand components made to order — never generic, never outdated. Sourced directly from the original RV manufacturers for perfect fit and factory-level quality.